I am looking for a sanity check, I checked the compression on my 98 Challenger 1800.
I measured exactly 100psi in all 4 cylinders. The engines ran fine all summer, but I wanted to do a compression check since I purchased the boat at the start of this boating season and I wanted to get an overall condition of the engines before storing the boat for the winter.
As the attached pictures show, there is a 26 inch hose attached to the gauge, plus another 8 inch hose that attaches by quick connect and has the correct fitting for the spark plug hole.
The battery is a good battery and has a good charge, and yes I did put the throttle all the way up.
The engines do start up with no problems.
This is from Harbor Freight item # 95187. Palerider's gauge looked similar in his post but he may have a slightly different kit. I did connect the quick connect fitting to a compressor and the gauge did match the reading of the gauge on the compressor, but this was without the last 8 inch adapter that is used to go into the spark plug hole.
Could my engines have got that low a compression, but all 4 are identical? The boat did run fine all summer.
I measured exactly 100psi in all 4 cylinders. The engines ran fine all summer, but I wanted to do a compression check since I purchased the boat at the start of this boating season and I wanted to get an overall condition of the engines before storing the boat for the winter.
As the attached pictures show, there is a 26 inch hose attached to the gauge, plus another 8 inch hose that attaches by quick connect and has the correct fitting for the spark plug hole.
The battery is a good battery and has a good charge, and yes I did put the throttle all the way up.
The engines do start up with no problems.
This is from Harbor Freight item # 95187. Palerider's gauge looked similar in his post but he may have a slightly different kit. I did connect the quick connect fitting to a compressor and the gauge did match the reading of the gauge on the compressor, but this was without the last 8 inch adapter that is used to go into the spark plug hole.
Could my engines have got that low a compression, but all 4 are identical? The boat did run fine all summer.